Automatic weighing-machine.



No. 721,469. PATBNTED FEB. 24, 1903.

E. SOHENGK. AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED JAN. 7, 1901.

4 SHEETS-SHEET 1.

H0 MODEL.

l/ilhessgy 4L PATENTED FEB; 24, 1903.

E. SCHENGK. AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED JAN. 7, 1901. v

4 SEETSSHEBT 2.

K0 MODEL.

l k J k @mml r/ XMwwoc/a wzw PATENTED FEB. 24, 1903.

E. SGHENGK. AUTOMATIC WEIGHING MACHINE.

upmoumn rum) JAN. 7, 1901. 7 up 10mm. 1 4 sums-sum a.

INVENTOR 5M JM ATTORNEYS PATENTED FEB. 24, 1903.

E. SGHENOK. AUTOMATIC WEIGHING MACHINE.

APPLIGATION FILED JAN. '7, 1901. V 4 SHEETS-SHEET 4.

7m: uonms PETERS co. Pum'ouwo" WASHINGTON. 04 c. v

UNITED STAT S PATENT OFFICE.

EMIL SCHENOK, OF DARMSTADT, GERMANY, ASSIGNOR TO CARL SCHENOK, EISENGIESSEREI UND MASGI-IINENFABRIK DARMSTADT, G. M. B. 1 1., OF DARMSTADT, GERMANY, A FIRM.

AUTOMATIC WEIGHING-MACHINE..

SPEGIFICATION forming part of Letters Patent NO. 721,469, dated February 24, 1903,

Application filed January 7, 1901. Serial No. 42,417. (No model.)

To ctZZ whom, it may concern.- weight side, and vice versa. For example,

Be it known that I, EMIL SOHENOK, mesuppose a load of seven thousand three hunchanical engineer, residing at Landwehrdred and sixty-two kilos is to be Weighed. strasse 55, Darmstadt, in the Grand Duchy of The first weighing-beam turns over on the 5 Hesse, Germany, have invented new and useload side When'its sliding weight is in a posiful Improvements in Automatic Weighingtion corresponding with a load of eight thou- Machines, (for which Letters Patent have sand kilos. The second beam is then liberbeen applied for in Germany, application ated and turns when its sliding weight is in 16,080" /42, dated June 13, 1900,) of which a position corresponding with a load of seven to the following is a specification. hundred kilos, and this is subtracted from This invention relates to an automatic the eight thousand kilos by the registering weighing-machine of the class in which there apparatus. The third beam turns when its is a series of weighing-beams united by links sliding weight is in a posit-ion corresponding and coming into play successively when a with seventy kilos, which is added to the :5 load is Weighed. Thus the-first beam indiprevious number by the registering appacates weights ranging from one thousand ratus. Finally, the fourth beam turns when kilos to the maximum capacity of the weighits sliding weight is in a position corresponding-machine in units of one thousand kilos, ing with eight kilos, which is subtracted by the second indicates weights ranging from the registering apparatus.

20 one hundred to one thousand kilos in units By thepresentinvention eachslidingweight of one hundred kilos, the third indicates is moved during the weighingin the same diweights ranging from ten to one hundred rection from the load side tothe weight side kilos in units of ten kilos, and the fourth inand byaspecialdevice is brought to rest before dicates weights ranging from one to ten kilos the equipoise, so that there is still an appro- 25 in units'of one kilo. It will be evident that priate fraction of the load left to be weighed, all the beams must cooperate to indicate a as will be explained with reference to the acweight above one thousand kilos the nucompanying drawings. It willbe understood merical expression of which does not contain that in this case separate fractions of the load 'a zero. The beams are connected witha regare successively weighed and all the weigh- 30 istering device in such manner that at each ings are added together by the registering 8o weighing the different beams register figures device. This is achieved by stopping the indicating that part of the total load which sliding weight, as said, before the beam is in the particular beam has weighed. Machines equilibrium. The desired result is effected of this kind are arranged as sliding-weight by arranging a series of excess weights of 5 machines, a weight being slid on each beam different values, which are loaded onto the by means of a rack and pinion and a vertilast beam, the equilibrium of which is shown cally-movable rack until the beam is counterby an indicator and scale. As this beam poised. The previous weighing-machines of gradually sinks the excess weights are gradthis kind are described in German Patent No. ually taken off, the heaviest first and the 40 44,605 and also in my United States Patent lightest last, so that in the end the whole No. 457,733 and withrespect to the different system of beams is in equilibrium without weighing-beams and the movement of the excess weight. sliding weights are arranged as follows: In the drawings is shown a weighing-ma- They are characterized by the fact that the chine constructed according to this invention 5 sliding weights are moved within such limits with three beams; but the invention is equally and in such directions that the equilibrium applicable with any number of beams. position is overstepped and the excess weight Figure l is a front view, and Fig. 2 a side corresponding with the value of the sliding view, of the machine, both partly in section. weight and always becoming smaller is alter- Figs. 3, 4., and 5 are sections through the sepa- 50 nately carried over from the load side to the rate weighing-beams on the lines 3 3, 4 l, and too 5 5, respectively, of Fig. 1. Figs. 6 and '7 show the mechanism for liberating the beams in two different positions. Fig. 8 is an enlarged view of the vertical rack and the parts adjacent to it. Fig. 9 shows the mechanism for raising the vertical racks to the operative position. Fig. 10 shows a form of printing mechanism desi ned to print the Weight registered on a ticket. Figs. 11, 12, and 13 are details of the printing mechanism, Figs. 12 and 13 being sections on lines a b c d of Fig. 10, respectively.

In the frame A are supported three weighing-beams Z2 Z1 11 b swings on the fixed knife-edge a. b rests on the knife-edge a and is pulled in an upward direction by the beam 1) through the rod In similar manner the beam' 6 is supported at a and is subjected to an upward pull through the rod 0 The leverage is so arranged that the weight upon 19 has the greatest effect. The load to be weighed is carried by the rod 0 on the beam 1), and the beam b carries an indicator 2, which moves in front of a fiducial point .2. On the beams b b b are sliding weights 6' e 6 which have racks on their under sides with which pinions g g g engage, which pinions g g and g are journaled in the frame A of the machine and are situated directly beneath the knife-edges a, a and a so that for all positions of the weighing-beams Z), b and b the racks on the undersides of the sliding weights cf, 6 and 6 always engage properly with the pinions g, 7 and 9 The latter are turned by the vertical racks ff f Under the lower ends of these vertical racks there is a rail h, which can be raised and lowered by means of racks h h, pinion h on shaft k and lever-handle h. When this rail is raised, it lifts the racks ff f while when it is lowered the said racks do not at once descend. Theracksf,f andf are kept in engagement with the pinions g, g and g by means of the guides A, affixed to the frame A of the machine. By means of an appropriate arrangement of detents the rack f is allowed to descend first through a certain distance and then the rack f descends similarly, the devices for effecting this being as follows: Beam 19 carries a rod 7;, on which are pins 70 and 70 On these pins rest lever-arms Z Z the weights of which are determined by the position and size of sliding weights r 1*. These levers are centered on fixed supports .9 8 but their turning movement is limited by stops m m Against the inner ends of levers Z Z which are supported by knifeedges bearing upon the supports 3 3 which are part of the frame A of the machine, and also against the inner end of beam 17 bear the ends of levers 13 19 19, the other ends of which serve as detents, as will be described presently. Levers p and p are pivoted to one end of other levers g and (1 which are centered on fixed supports 0 0 but lever 19 is pivoted on a fixed support 0. The levers p p 19 have at their lower ends detent-hooks 1) p 19 which engage with teeth in the racks f f f when the noses 19 19 13 on the upper ends of the levers slide out of contact with the ends of the levers b Z Z This action occurs successively as follows: If the detent 19 engages with the rack f while this is descending, the lever 19 will be carried down- Ward, taking with it the arm of the lever g until the other arm of this lever strikes against the stop 12 but by this movement of the lever g the lever 11 is moved, so that the detent 1 which up till now has prevented the rack f from descending, is released from its engagement in the notch which this rack f carries. This rack therefore descends, and in a similar manner through the lever p detent 19 and lever g raises the lever 1L and disengages the detent 2' from rack f. The rack f then descends until the beam b has obtained its equilibrium position and the detent p falls into a tooth of the rack and arrests the latter.

It must be added that to insure uniform descent a pendulum escapement P -of known construction is provided, and by means of this the racks f, f andf are permitted to fall only step by step through the distance of a single tooth.

The form of escapement illustrated is operated as follows: Each of the racks f,f and f is provided with teeth, which mesh with the pinions t, F, and t loosely mounted on the shaft 15 which revolves in bearings and 10 supported on the frame A of the machine and prevented from moving longitudinally in one direction along the shaft t by the bearing 10 and the collars r and o and in the other direction by the ratchet-wheels 29 and 6 which are affixed to the shaft and engage with spring-pawls t ,t and i, affixed to pinions 6, t and i in such a manner that the shaft 15 will be caused to revolve by the downward motion of the racks f, f and f but will remain stationary while the racks f, f and f are being raised to the operative position. Affixed to shaft 75 is spurwheel i which meshes with pinion t affixed to shaft 15 which is journaled in the escapement-frame B, supported by the frame A of the machine. Upon shaft is also affixed the escapement-wheel t, which is provided with the usual anchor 25 and pendulum P. As the parts are so proportioned that the weight of the single rack f is sufficient to operate the escapement, it will be readily seen that the racks f, f and f after being elevated to the operative position will descend step by step as the pendulum swings until they are stopped by the detent-hooks p p and p of the levers p, 19 and 19 I do not confine myself to an escapement of this precise form.

It is understood that while I have shown the racks f, f and f as upright and therefore actuated by the force of gravity 1 do not limit myself to this form of construction, but may employ the well-known equivalent of a weight-viz., springs-to actuate the racks or other equivalents, and I desire it to be understood that where in the claims I speak of upright racks (actuated by gravity) I cover as an equivalent any construction in which the rack is under the action of a' force tending to move it lengthwise} The manner in which this automatic weighing-machine works will be understood from the following example: The sliding weight a can counterbalance a load of one thousand kilos in steps of one hundred kilos, e a load of two hundred kilos in steps of ten kilos, and e a load of twenty kilos in steps of one kilo. The pressure of the lever Z on the pin k is so arranged that it corresponds with the load of one hundred and thirty-five kilos on the weigh-bridge, while the pressure of the lever Z on its pin 76 corresponds with the load of fifteen kilos. Suppose that the load of eight hundred and seventy-two kilos is placed on the weigh-bridge, all the sliding weights are in their extreme righthand position, and the vertical racks ff are arrested by the levers t 11 while rack f is still held at rest by the raising device h. The latter is moved downward and the apparatus put into action.

Period 1. The rack f moves downward and drives the sliding weight 6 onto the beam 17 frdm right to left until the equilibrium has been attained and the beam sinks. Now as the beam b receives the pressure from Z Z of 135-1-152150 kilos it will sink as soon as c has been moved up to that point which corresponds with the load of 872-150 722 kilosthat is to say, between the division-marks 700 and 800 on the vertical rack f The lever Z now lies against the stop m and its pressure on the beam 73 is removed and the system of levers comes to rest. At the same time the lever 19 has slid out of contact with the lever Z and its detent has engaged in the rack f If this latter is marked at every one hundred divisions, it will stop at the eight hundredth. Its weight acts on the lever g and disen gages the detent i from the rack f which thus begins to descend.

Period 2. During the downward movement of the rack f the sliding weight 6 is driven along the beam 19 As the sliding weight 6 has already weighed eight hundred kilos,there still remain seventy-two kilos for the other sliding weights. The lever Z is bearing on the beam 1) with apressure of fifteen kilos. It fol lows that the movement of the sliding weight 6 will bring it in its position of equilibrium when it has come to the position corresponding with 72-15257 kilos. At this moment the beam will sink until thestop m has relieved the pressure of the lever Z The leverp will now be disengaged from lever Z at fifty-seven kilos, and the arresting of the rack f will be at the next following divisionnamely, sixty kilos. The weight of this rack f moves the lever and disengages the detent W from the rack f, which therefore can descend.

Period 3. The sliding weights e and e have weighed eight hundred and sixty kilos, respectively, so that the final weight 6' has still to weigh 872860:12 kilos. There is no longer any excess weight of the rod is, so that the equilibrium and the final sinking of beam b ensues when the sliding weight e stands at the point corresponding with twelve kilos. At this moment the stop on the lever 19 will have slid out of contact with the end of the beam 11 so that the rack f and with it the sliding weight e are stopped. The weighing-machine has now completed its action and the sliding weights stand at 800, (50, and 12, respectively-that is, a total of eight hundred and seventy-two kilos.

By means of a registering device the values represented by the separate sliding weights are united or can be printed on a ticket.

The values represented by the separate sliding weights may be indicated by a registering device adapted to print the weight directly upon a card, as is illustrated in Figs. 10,11,12, and 13; butI do not confine myself to this precise form of printing device, which is described as follows: The racks f and f each engage with pinions x and w iwhich are afiixed to shafts 1 and y journaled in the frame A of the machine, upon which shafts and also upon the shaft y, to which the pinion 9 is affixed, are also affixed the pinions 1 1 and 11 which mesh with racks on the under sides of type-bars 0a, 00*, and 00 which are provided with numeral-type, as shown in Fig. 11, and pass through suitable guides in the casing C, supported by the frame A of the machine in proximity to a platen 0c, sliding up and down upon guides 00 and arranged to be pressed against the numeral-type on the bars 00, aciand 00 by an eccentric m arranged to turn on shaft or and actuated by a suitable handle so in such a manner as to print or emboss the numerals upon a card to be inserted through an aperture 00 in the casing O.

The range of the numerals on each type-bar a? m m should be the same as that of the corresponding scale-beams 1), b and b respectively. Thus Fig. 11 illustrates the type-bar 00 having ten numerals corresponding to the ten steps of one hundred kilograms each, which constitute the range of the movement of the sliding weight 6 on the scale-beam 5 Since the range of movement of the weights 6 and e on the scale-beams b b, respectively, embraces twenty steps, (each of ten kilograms and one kilogram, respectively,) the typebars 00 x will each have a scale of twenty numerals.

Now what I claim, and desire to secure by Letters Patent, is the following:

1. In an automatic weighing-machine, the combination of weighing-beams one of which is a load-beam, with sliding weights on said beams, means to move the weights on the beams, and means operated by the movement of a beam to stop the movement of the indi+ to one number, which can be read IIO vidual weights on the beams other than the load-beam, before equilibrium of the entire system of beams is arrived at.

2. In an automatic weighing-machine, the combination, with aseries of weighing-beams, provided with sliding Weights, of a series of additional weights resting on the last weighing-beam, and means to enable said additional Weights to be taken off said last weighing-beam substantially as described.

3. In an automatic Weighing-machine the combination with a series of weighing-beams provided with sliding weights of a series of weighted levers connected with the weighingbeams and a series of stops in the path of the levers adapted to arrest their descent and support their weight substantially as described.

4. In an automatic weighing-machine the combination with a series of weighing-beams provided with sliding weights and upright racks for imparting motion to the said sliding weights of couples of detents connected with sundry of the racks and one of which is adapted to hold each of such racks in its uppermost position and the other of which is to catch it at the proper point of descent of the corresponding weighing-beam, substantially as described.

5. In a weighing-machine, the combination of weighing-beams, one of which is a loadbeam, with sliding weights on said beams, means for moving said weights on said beams, and means, brought into action by the movement of a beam, to stop the movement of the individual weights on the beams other than the load-beam, before the equilibrium of the entire system of beams is arrived at.

6. In an automatic weighing-machine the combination with aseries of Weighing-beams provided with sliding weights of a series of levers connected with the weighing-beams, a series of stops adapted to catch the said levers at a predetermined point of their descent, a series of detent-hooks controlled by the said levers and adapted to engage vertical racks, which actuate the sliding Weights substantially as described.

7. In an automatic weighing-machine, the combination, with weighing-beams, of sliding weights on said beams, upright racks for imparting motion to said weights, detent-hooks pivoted on stationary supports and adapted to engage sundry of the racks to hold them temporarily in their initial position, levers, actuated by the movement of a beam, and provided with hooks or catches to arrest the racks, and a releasing connection from the lever of one rack to the detent-hook of the next succeeding rack.

8. In a weighing-machine, the combination of a series of connected weighing-beams, weights movably carried by said beams, individual operating devices for moving each of said weights, additional weights arranged to bear on the last weighing-beam, and mechanism, governed by each of said additional Weights, for lockingoneof said operating devices and practically at the same time releasing the next operating device.

9. In a Weighing-machine, the combination of a series of connected weighing beams, weights movably carried by said beams, individual operating devices for moving each of said weights, mechanism for arresting the weights on all the beams but the load-beam, before equilibrium of the entire system of beams is obtained.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EMIL SCHENCK.

Witnesses:

FRIEDRICH QUEHL, EVA SATTLER. 

